Publications
Phosphorus plays crucial roles in biology and sustainability. It's particularly important in crop nutrition. 4R practices for phosphorus management have great potential to improve both crop yields and ...
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Fertilizer use efficiency has many definitions. One of the most useful is "partial factor productivity" (PFP). The following four charts show trends for PFP for nitrogen (N), phosphorus (P), and potas ...
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Selected articles for the Northeastern United States, and Eastern Canada
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Laura Lindsey (Bast), Robert Mullen, Ivan O’Halloran, Darryl Warncke, and Tom Bruulsema
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by Tom Bruulsema, Robert Mullen, Ivan O'Halloran, and Harold Watters.
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Tom Bruulsema, Patrick Heffer, Ross Welch, Ismail Cakmak, and Kevin Moran
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Cliff Snyder, Tom Bruulsema, Valter Casarin, Fang Chen, Raúl Jaramillo, Tom Jensen, Robert Mikkelsen, Rob Norton, T. Satyanarayana, and Shihua Tu
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Paul E. Fixen, Tom W. Bruulsema, Tom L. Jensen, Robert Mikkelsen, T. Scott Murrell, Steve B. Phillips, Quentin Rund, and W. Mike Stewart
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Robert Mullen, Greg LaBarge, and Keith Diedrick
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Tom Bruulsema, Christina DiFonzo, and Claudio Gratton
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By Tom W. Bruulsema and Quirine Ketterings
Selected articles for the Northeastern United States and Eastern Canada, 2002-2006